OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

tree-flow.h (struct ptr_info_def): Make escape_mask a ENUM_BITFIELD.

Browse Source 
2007-11-09  Richard Guenther  <rguenther@suse.de>

	* tree-flow.h (struct ptr_info_def): Make escape_mask a
	ENUM_BITFIELD.
	(struct ptr_info_def): Likewise.
	(enum escape_type): Also use bit zero.

From-SVN: r130041
This commit is contained in:
Richard Guenther 2007-11-09 12:47:22 +00:00 committed by Richard Biener
parent 6aaa40131a
commit 91a17a346e
2 changed files with 34 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2007-11-09 Richard Guenther <rguenther@suse.de>
* tree-flow.h (struct ptr_info_def): Make escape_mask a
ENUM_BITFIELD.
(struct ptr_info_def): Likewise.
(enum escape_type): Also use bit zero.
2007-11-09 Richard Guenther <rguenther@suse.de>
PR tree-optimization/33604

54
gcc/tree-flow.h
View File

@ -40,6 +40,25 @@ typedef struct basic_block_def *basic_block;
#endif
struct static_var_ann_d;
/* The reasons a variable may escape a function. */
enum escape_type
{
NO_ESCAPE = 0, /* Doesn't escape. */
ESCAPE_STORED_IN_GLOBAL = 1 << 0,
ESCAPE_TO_ASM = 1 << 1, /* Passed by address to an assembly
statement. */
ESCAPE_TO_CALL = 1 << 2, /* Escapes to a function call. */
ESCAPE_BAD_CAST = 1 << 3, /* Cast from pointer to integer */
ESCAPE_TO_RETURN = 1 << 4, /* Returned from function. */
ESCAPE_TO_PURE_CONST = 1 << 5, /* Escapes to a pure or constant
function call. */
ESCAPE_IS_GLOBAL = 1 << 6, /* Is a global variable. */
ESCAPE_IS_PARM = 1 << 7, /* Is an incoming function argument. */
ESCAPE_UNKNOWN = 1 << 8 /* We believe it escapes for
some reason not enumerated
above. */
};
/* Memory reference statistics for individual memory symbols,
collected during alias analysis. */
struct mem_sym_stats_d GTY(())
@ -228,6 +247,9 @@ struct ptr_info_def GTY(())
/* Nonzero if this pointer points to NULL. */
unsigned int pt_null : 1;
/* Mask of reasons this pointer's value escapes the function */
ENUM_BITFIELD (escape_type) escape_mask : 9;
/* Set of variables that this pointer may point to. */
bitmap pt_vars;
@ -236,9 +258,6 @@ struct ptr_info_def GTY(())
pointer will be represented by this memory tag, instead of the type
tag computed by TBAA. */
tree name_mem_tag;
/* Mask of reasons this pointer's value escapes the function */
unsigned int escape_mask;
};
@ -343,13 +362,17 @@ struct var_ann_d GTY(())
unsigned is_heapvar : 1;
/* True if the variable is call clobbered. */
unsigned int call_clobbered : 1;
unsigned call_clobbered : 1;
/* This field describes several "no alias" attributes that some
symbols are known to have. See the enum's definition for more
information on each attribute. */
ENUM_BITFIELD (noalias_state) noalias_state : 2;
/* Mask of values saying the reasons why this variable has escaped
the function. */
ENUM_BITFIELD (escape_type) escape_mask : 9;
/* Memory partition tag assigned to this symbol. */
tree mpt;
@ -376,10 +399,6 @@ struct var_ann_d GTY(())
/* If this variable is a structure, this fields holds an array
of symbols representing each of the fields of the structure. */
VEC(tree,gc) *subvars;
/* Mask of values saying the reasons why this variable has escaped
the function. */
unsigned int escape_mask;
};
/* Container for variable annotation used by hashtable for annotations for
@ -1033,25 +1052,6 @@ enum move_pos
extern enum move_pos movement_possibility (tree);
char *get_lsm_tmp_name (tree, unsigned);
/* The reasons a variable may escape a function. */
enum escape_type
{
NO_ESCAPE = 0, /* Doesn't escape. */
ESCAPE_STORED_IN_GLOBAL = 1 << 1,
ESCAPE_TO_ASM = 1 << 2, /* Passed by address to an assembly
statement. */
ESCAPE_TO_CALL = 1 << 3, /* Escapes to a function call. */
ESCAPE_BAD_CAST = 1 << 4, /* Cast from pointer to integer */
ESCAPE_TO_RETURN = 1 << 5, /* Returned from function. */
ESCAPE_TO_PURE_CONST = 1 << 6, /* Escapes to a pure or constant
function call. */
ESCAPE_IS_GLOBAL = 1 << 7, /* Is a global variable. */
ESCAPE_IS_PARM = 1 << 8, /* Is an incoming function argument. */
ESCAPE_UNKNOWN = 1 << 9 /* We believe it escapes for
some reason not enumerated
above. */
};
/* In tree-flow-inline.h */
static inline bool is_call_clobbered (const_tree);
static inline void mark_call_clobbered (tree, unsigned int);